Herbicide Control Treatments for Invasive Trees and Shrubs

Herbicide Control Treatments for Invasive Trees and Shrubs Max Williamson

Nonnative Plants Promote Crop, Naturalized Ornamental, Wildlife Food Soil Stabilizer Control Invasive Noxious Pest Plant

Treatment Options Foliar Basal Cut Surface Dormant Stem Soil Applied

Invasive Trees • Tallowtree, Popcorntree Triadica sebifera (Sapium sebiferum)

TALLOWTREE or POPCORNTREE is deciduous, growing to about 50 feet and has heart shaped leaves. Recommended Control Procedures: Large Trees Stem injections Arsenal AC*, Garlon 3 A, or Pathfinder II anytime except March and April Cut stumps -apply the herbicides immediately after cutting (Ortho Brush-B-Gone and Enforcer Brush Killer) Extensive infestations apply Velpar L. Saplings Apply Garlon 4 as 20% basal spray Seedlings and Saplings Foliar spray Arsenal AC* at 1 percent, Krenite S 30 percent, or Garlon 4 at 2 percent *Nontarget plants may be killed or injured by root uptake

Invasive Trees • Tallowtree, Popcorntree Triadica sebifera (Sapium sebiferum) • Silktree, Mimosa Albizia julibrissin

• SILKTREE, MIMOSA is a deciduous legume, growing 10 to 50 feet with feathery leaves • Recommended Control Procedures: • Large Trees • Stem injections- Arsenal AC* or Garlon 3 A, anytime except March and April • Cut Stumps-apply the herbicides immediately after cutting • Saplings • Apply Garlon 4 as 20% basal spray • Resprouts and Seedlings • July to October-Garlon 3 A, Garlon 4, or Glyphosate as 2 % foliar spray • July to September-Transline as 0. 2 to 0. 4 % foliar spray *Nontarget plants may be killed or injured by root uptake

Invasive Trees • Tallowtree, Popcorntree Triadica sebifera (Sapium sebiferum) • Silktree, Mimosa Albizia julibrissin • Princesstree, Royal Paulownia tomentosa

• PRINCESS TREE, ROYAL PAULOWNIA is deciduous, growing to 60 feet with large-heart shaped leaves and pecan-like seed clusters • Recommended Control Procedures: • Large Trees • Stem injections- Arsenal AC* or Glyphosate, anytime except March and April • Cut Stumps-apply the herbicides immediately after cutting • Saplings • Apply Garlon 4 as 20% basal spray • Resprouts and Seedlings • July to October-Arsenal AC* 1 percent; Glyphosate, Garlon 3 A, or Garlon 4 as 2 % foliar spray *Nontarget plants may be killed or injured by root uptake

Invasive Trees • Tallowtree, Popcorntree Triadica sebifera (Sapium sebiferum) • Silktree, Mimosa Albizia julibrissin • Princesstree, Royal Paulownia tomentosa • Tree-of-heaven or Ailanthus altissima

TREE-OF-HEAVEN, AILANTHUS is deciduous, growing to about 80 feet and has long pinnately compound leaves. Recommended Control Procedures: Large Trees Stem injections Garlon 3 A, Pathway*, Pathfinder II, or Arsenal AC* (midsummer best, late winter somewhat less effective) Cut stumps Apply the herbicides immediately after cutting Saplings Apply Garlon 4 as 20% basal application Seedlings and Saplings Foliar spray Arsenal AC* 1 percent, Krenite S 30 percent, Garlon 4 at 2 percent *Nontarget plants may be killed or injured by root uptake

Invasive Trees • Tallowtree, Popcorntree Triadica sebifera (Sapium sebiferum) • Silktree, Mimosa Albizia julibrissin • Princesstree, Royal Paulownia tomentosa • Tree-of-heaven or Ailanthus altissima • Chinaberrytree Melia azedarach

• CHINABERRYTREE is deciduous, growing to 50 feet with lacy, many-divided dark green leaves • Recommended Control Procedures: • Large Trees • Stem injections- Arsenal AC*, Pathway*, Pathfinder II, or Garlon 3 A anytime except March and April • Cut Stumps-apply the herbicides immediately after cutting • Saplings • Apply Garlon 4 as 20% basal spray • Resprouts and Seedlings Foliar spray Garlon 3 A, or Garlon 4 as 2 % foliar spray; Arsenal AC* at 1 percent. (July to October) *Nontarget plants may be killed or injured by root uptake

Invasive trees Russian Olive (Elaeagnus angustifolia)

• RUSSIAN OLIVE a small thorny tree to 35 feet microscopic silvery scales covered leaves • Recommended Control Procedures: • Large Trees • Stem injections- Arsenal AC* or Garlon 3 A, anytime except March and April • Cut Stumps-apply the herbicides immediately after cutting • Saplings • Apply Garlon 4 as 20% basal spray • Resprouts and Seedlings • Foliar spray Arsenal AC* at 1 percent; Glyphosate, Garlon 3 A, or Garlon 4 at 2 percent. (July to October) *Nontarget plants may be killed or injured by root uptake

Invasive Shrubs • Chinese & European Privet Ligustrum sinense & L. vulgare

• CHINESE PRIVET, EUROPEAN PRIVET is semi-evergreen, bushy shrub to 30 feet Recommended Control Procedures • Foliar spray wetting all leaves with Glyphosate at 3 percent or Arsenal AC* at 1 -percent. (April to December) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray • Cut stems and stumps treat with Arsenal AC* or Velpar L* at 10 percent. For safety to surrounding vegetation treat cutsurfaces with Garlon 3 A or Glyphosate at 20 -percent *Nontarget plants may be killed or injured by root uptake

Invasive Shrubs • Chinese & European Privet Ligustrum sinense & L. vulgare • Bush Honeysuckles Amur (Lonicera maakii) Morrow (L. morrowii) Tartarian (L. tartarica) Winter (L. frangrantissima) Winter Morrow Amur Tartarian

• BUSH HONEYSUCKLE is deciduous, branched, multiple stemmed, with dark-green oval –to-oblong leaves • Recommended Control Procedures • Foliar spray wetting all leaves with Glyphosate at 2 -percent (April to November) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray • Cut stems and stumps treat with Arsenal AC* at 10 percent, or Glyphosate at 20 percent. *Nontarget plants may be killed or injured by root uptake

Invasive Shrubs • Chinese & European Privet Ligustrum sinense & L. vulgare • Bush Honeysuckles Lonicera spp. • Invasive Roses Multiflora rose (Rosa multiflora) Macartney rose (R. bracteata) Cherokee rose (R. laevigata)

• NONNATIVE ROSES are deciduous except for Cherokee • Recommended Control Procedures • Foliar spray wetting all leaves with • Escort at 0. 2 dry ounces per 3 -gallon (April to June) • Arsenal AC* at 1 -percent or Escort at the above rate (August to October) • Glyphosate, repeated applications, at 2 percent (May to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray (Jan to Feb or May to Oct) • Cut stems and stumps treat with Arsenal AC* at 10 percent, Glyphosate at 20 -percent *Nontarget plants may be killed or injured by root uptake

Invasive Shrubs • Chinese & European Privet Ligustrum sinense & L. vulgare • Bush Honeysuckles Lonicera spp. • Invasive Roses Rosa spp. • Autumn Olive Elaeagnus umbellata

• AUTUMN OLIVE is a tardily deciduous brushy shrub, 3 to 16 feet 12 feet • Recommended Control Procedures • Foliar spray wetting all leaves with Arsenal AC* or Vanquish* at 1 -percent. (April to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray ( Jan to Feb or May to Oct) • Cut stems and stumps treat with Arsenal AC* at 10 percent or Glyphosate at 20 percent *Nontarget plants may be killed or injured by root uptake

Invasive Shrubs • Chinese & European Privet Ligustrum sinense & L. vulgare • Bush Honeysuckles Lonicera spp. • Invasive Roses Rosa spp. • Autumn Olive Elaeagnus umbellata • Silverthorn or Thorny Olive Elaeagnus pungens

• SILVERTHORN, THORNY OLIVE is an evergreen, densely brushy shrub 3 to 25 feet • Recommended Control Procedures • Foliar spray wetting all leaves with Arsenal AC* or Vanquish* at 1 -percent. (April to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray (Jan to Feb or May to Oct) • Cut stems and stumps treat with Arsenal AC* at 10 percent or Glyphosate at 20 percent *Nontarget plants may be killed or injured by root uptake

Invasive Shrubs • Chinese & European Privet Ligustrum sinense & L. vulgare • Bush Honeysuckles Lonicera spp. • Invasive Roses Rosa spp. • Autumn Olive Elaeagnus umbellata • Silverthorn or Thorny Olive Elaeagnus pungens • Japanese Privet Ligustrum japonicum

• JAPANESE PRIVET is an evergreen to 35 feet, with an upward spreading canopy • Recommended Control Procedures • Foliar spray wetting all leaves with Arsenal AC* at 1 percent or Garlon 4 at 3 percent (August— September). Glyphosate at 3 percent (March to June) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray (Jan to Feb or May to October) • Cut stems and stumps treat with Arsenal AC* or Velpar L* at 10 percent For safety to surrounding vegetation treat cutsurfaces with Garlon 3 A or Glyphosate at 20 -percent *Nontarget plants may be killed or injured by root uptake

Invasive shrubs • Winged Burning Bush • Euonymus alata

• WINGED BURNING BUSH is a deciduous, multiple wing-stemmed, brushy shrub to 12 feet • Recommended Control Procedures • Foliar spray wetting all leaves with Arsenal AC* or Vanquish* at 1 -percent. (April to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray (Jan to Feb or May to Oct) • Cut stems and stumps treat with Arsenal AC* at 10 percent or Glyphosate at 20 percent *Nontarget plants may be killed or injured by root uptake

Invasive shrubs • Sacred Bamboo, NANDINA • Nandina domestica

• SACRED BAMBOO or NANDINA is an evergreen multi-stemmed erect shrub reaching 8 feet • Recommended Control Procedures • Foliar spray wetting all leaves with Glyphosate at 1 -percent (August to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray • Cut stems and stumps treat with Arsenal AC* at 10 percent, or Glyphosate at 20 percent. *Nontarget plants may be killed or injured by root uptake

Invasive Plant Management Programs • Prevention • • • Detection and Monitoring Control and Containment Restoration Research Education and Extension

Integrated Vegetation Management Methods for Invasive Plants • • • Prescribed Burning Mechanical Manual and Motor-Manual Biological Control Herbicides

Control a little now or Control a bunch later

The End!!